APA način citiranja

Bertsch, M., & Kamin, S. A positivity property of solutions of a degenerate parabolic equation with nonconstant coefficients.

Čikaški stil citiranja

Bertsch, M., i S. Kamin. A Positivity Property of Solutions of a Degenerate Parabolic Equation With Nonconstant Coefficients.

MLA način citiranja

Bertsch, M., i S. Kamin. A Positivity Property of Solutions of a Degenerate Parabolic Equation With Nonconstant Coefficients.